2009

Outdoor scene lit by the IES sky light
The
Daylight system on page 5139 combines the two daylight components of
sun and sky in a unified interface. It allows you to set date and time positions
with the light type you want to use.
IES Sky works correctly only when the sky object is pointing down from the
Z axis, meaning that it points down when looking from the Top view.
When using the default scanline renderer, IES Sky produces the best results
when used in conjunction with one of the advanced lighting options on page
6153: radiosity or light tracing.
5158 | Chapter 18 Lights and Cameras